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Issues when multiple tests run?
08-14-2014, 10:13 PM
Post: #3
RE: Issues when multiple tests run?
(08-14-2014 03:55 AM)pmeenan Wrote:  Considering you are seeing long times even serving static resources I'd look at the web server config first. An easy fix might be to put varnish or Nginx in front of Apache to serve the static files and only have Apache handle the heavier php requests (or switch to Nginx outright - though I have a bad history with scaling Apache and may be biased).

Hi pmeenan,

thanks for your feedback. It confirms what I was suspecting. Most single tests like Pingdom FPT, Gtmetrix or even using the Network Console for Chrome or Firefox return rather fast results, but once in a while the page hangs, probably when there happen to be multiple simultaneous requests. I don't have more than 40-60 hits per hour, so probably most of the times there is not much stress on the server, hence a good performance most of the time, and then boom, suddenly it really lags.

I will contact the professional services team of my host to check the server settings, any recommendations what I should ask them to do? I use Prestashop, and other Prestashop users have recommended checking if the LAMP stack is optimized, and PHP / SQL caching.

And like you said, what really makes me wonder is why images are often served so slowly, from a TTFB point of view, there's no reason. Any recommendation on what to look for to fix that?

Thanks a lot again, your help is much appreciated!

All the best,

Dan
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RE: Issues when multiple tests run? - Mister Denial - 08-14-2014 10:13 PM

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